diff --git a/CleanSpec.mk b/CleanSpec.mk
index 5ab64b3..043aa60 100644
--- a/CleanSpec.mk
+++ b/CleanSpec.mk
@@ -463,6 +463,19 @@
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/vendor/compatibility_matrix.xml)
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/vendor/compatibility_matrix.xml)
 
+# Remove obsolete intermedates src files
+$(call add-clean-step, rm -rf $(TARGET_OUT_COMMON_INTERMEDIATES)/*/*_intermediates/src/RenderScript.stamp*)
+$(call add-clean-step, rm -rf $(TARGET_OUT_COMMON_INTERMEDIATES)/APPS/*_intermediates/src)
+$(call add-clean-step, rm -rf $(TARGET_OUT_COMMON_INTERMEDIATES)/JAVA_LIBRARIES/*_intermediates/src)
+$(call add-clean-step, rm -rf $(TARGET_OUT_COMMON_INTERMEDIATES)/APPS/*_intermediates/java-source-list)
+$(call add-clean-step, rm -rf $(TARGET_OUT_COMMON_INTERMEDIATES)/JAVA_LIBRARIES/*_intermediates/java-source-list)
+$(call add-clean-step, rm -rf $(OUT_DOCS)/*-timestamp)
+
+$(call add-clean-step, rm -rf $(TARGET_COMMON_OUT_ROOT)/obj_asan/APPS/*_intermediates/src)
+$(call add-clean-step, rm -rf $(TARGET_COMMON_OUT_ROOT)/obj_asan/JAVA_LIBRARIES/*_intermediates/src)
+$(call add-clean-step, rm -rf $(TARGET_COMMON_OUT_ROOT)/obj_asan/APPS/*_intermediates/java-source-list)
+$(call add-clean-step, rm -rf $(TARGET_COMMON_OUT_ROOT)/obj_asan/JAVA_LIBRARIES/*_intermediates/java-source-list)
+
 # ************************************************
 # NEWER CLEAN STEPS MUST BE AT THE END OF THE LIST
 # ************************************************
diff --git a/core/Makefile b/core/Makefile
index 10ca65b..9f164d8 100644
--- a/core/Makefile
+++ b/core/Makefile
@@ -1202,6 +1202,12 @@
     $(TARGET_RECOVERY_ROOT_OUT)/plat_property_contexts \
     $(TARGET_RECOVERY_ROOT_OUT)/vendor_property_contexts
 
+ifdef BOARD_ODM_SEPOLICY_DIRS
+recovery_sepolicy += \
+    $(TARGET_RECOVERY_ROOT_OUT)/odm_file_contexts \
+    $(TARGET_RECOVERY_ROOT_OUT)/odm_property_contexts
+endif
+
 # Passed into rsync from non-recovery root to recovery root, to avoid overwriting recovery-specific
 # SELinux files
 IGNORE_RECOVERY_SEPOLICY := $(patsubst $(TARGET_RECOVERY_OUT)/%,--exclude=/%,$(recovery_sepolicy))
@@ -1260,19 +1266,23 @@
 recovery_wipe :=
 endif
 
-# Prior to A/B update, we used to have:
+# Traditionally with non-A/B OTA we have:
 #   boot.img + recovery-from-boot.p + recovery-resource.dat = recovery.img.
-# recovery-resource.dat is needed only if we carry a patch of the boot and
-# recovery images and invoke install-recovery.sh on the first boot post an
-# OTA update.
+# recovery-resource.dat is needed only if we carry an imgdiff patch of the boot and recovery images
+# and invoke install-recovery.sh on the first boot post an OTA update.
 #
 # We no longer need that if one of the following conditions holds:
-#   a) We carry a full copy of the recovery image
+#   a) We carry a full copy of the recovery image - no patching needed
 #      (BOARD_USES_FULL_RECOVERY_IMAGE = true);
-#   b) We build a single image that contains boot and recovery both
-#      (BOARD_USES_RECOVERY_AS_BOOT = true).
+#   b) We build a single image that contains boot and recovery both - no recovery image to install
+#      (BOARD_USES_RECOVERY_AS_BOOT = true);
+#   c) We build the root into system image - not needing the resource file as we do bsdiff
+#      (BOARD_BUILD_SYSTEM_ROOT_IMAGE = true).
+# Note that condition b) implies condition c), because of the earlier check in this file:
+# "BOARD_USES_RECOVERY_AS_BOOT = true must have BOARD_BUILD_SYSTEM_ROOT_IMAGE = true" (not vice
+# versa though).
 
-ifeq (,$(filter true, $(BOARD_USES_FULL_RECOVERY_IMAGE) $(BOARD_USES_RECOVERY_AS_BOOT)))
+ifeq (,$(filter true, $(BOARD_USES_FULL_RECOVERY_IMAGE) $(BOARD_BUILD_SYSTEM_ROOT_IMAGE)))
 # Named '.dat' so we don't attempt to use imgdiff for patching it.
 RECOVERY_RESOURCE_ZIP := $(TARGET_OUT)/etc/recovery-resource.dat
 else
@@ -1559,15 +1569,21 @@
 # image size check calculation.
 ifneq ($(INSTALLED_RECOVERYIMAGE_TARGET),)
 ifneq ($(BOARD_USES_FULL_RECOVERY_IMAGE),true)
+ifeq ($(BOARD_BUILD_SYSTEM_ROOT_IMAGE),true)
+diff_tool := $(HOST_OUT_EXECUTABLES)/bsdiff
+else
+diff_tool := $(HOST_OUT_EXECUTABLES)/imgdiff
+endif
 intermediates := $(call intermediates-dir-for,PACKAGING,recovery_patch)
 RECOVERY_FROM_BOOT_PATCH := $(intermediates)/recovery_from_boot.p
-$(RECOVERY_FROM_BOOT_PATCH): $(INSTALLED_RECOVERYIMAGE_TARGET) \
-                             $(INSTALLED_BOOTIMAGE_TARGET) \
-			     $(HOST_OUT_EXECUTABLES)/imgdiff \
-	                     $(HOST_OUT_EXECUTABLES)/bsdiff
+$(RECOVERY_FROM_BOOT_PATCH): PRIVATE_DIFF_TOOL := $(diff_tool)
+$(RECOVERY_FROM_BOOT_PATCH): \
+		$(INSTALLED_RECOVERYIMAGE_TARGET) \
+		$(INSTALLED_BOOTIMAGE_TARGET) \
+		$(diff_tool)
 	@echo "Construct recovery from boot"
 	mkdir -p $(dir $@)
-	PATH=$(HOST_OUT_EXECUTABLES):$$PATH $(HOST_OUT_EXECUTABLES)/imgdiff $(INSTALLED_BOOTIMAGE_TARGET) $(INSTALLED_RECOVERYIMAGE_TARGET) $@
+	$(PRIVATE_DIFF_TOOL) $(INSTALLED_BOOTIMAGE_TARGET) $(INSTALLED_RECOVERYIMAGE_TARGET) $@
 else # $(BOARD_USES_FULL_RECOVERY_IMAGE) == true
 RECOVERY_FROM_BOOT_PATCH := $(INSTALLED_RECOVERYIMAGE_TARGET)
 endif
diff --git a/core/aapt2.mk b/core/aapt2.mk
index 895bd37..109bb39 100644
--- a/core/aapt2.mk
+++ b/core/aapt2.mk
@@ -52,7 +52,7 @@
 ifneq ($(my_generated_res_zips),)
 my_zipped_resources_flata := $(my_compiled_res_base_dir)/zip_res.flata
 $(my_zipped_resources_flata): PRIVATE_SOURCE_RES_ZIPS := $(my_generated_res_zips)
-$(my_zipped_resources_flata) : $(my_generated_res_deps) $(AAPT2) $(EXTRACT_SRCJARS)
+$(my_zipped_resources_flata) : $(my_generated_res_deps) $(AAPT2) $(ZIPSYNC)
 	@echo "AAPT2 compile $@ <- $(PRIVATE_SOURCE_RES_ZIPS)"
 	$(call aapt2-compile-resource-zips)
 
@@ -78,12 +78,17 @@
 $(my_res_package): PRIVATE_AAPT_FLAGS += $(addprefix --split ,$(join $(built_apk_splits),$(addprefix :,$(my_apk_split_configs))))
 endif
 
+my_srcjar := $(intermediates.COMMON)/aapt2.srcjar
+LOCAL_SRCJARS += $(my_srcjar)
+
 $(my_res_package): PRIVATE_RES_FLAT := $(my_res_resources_flat)
 $(my_res_package): PRIVATE_OVERLAY_FLAT := $(my_static_library_resources) $(my_resources_flata) $(my_overlay_resources_flat)
 $(my_res_package): PRIVATE_SHARED_ANDROID_LIBRARIES := $(my_shared_library_resources)
 $(my_res_package): PRIVATE_PROGUARD_OPTIONS_FILE := $(proguard_options_file)
 $(my_res_package): PRIVATE_ASSET_DIRS := $(my_asset_dirs)
-$(my_res_package): .KATI_IMPLICIT_OUTPUTS :=
+$(my_res_package): PRIVATE_JAVA_GEN_DIR := $(intermediates.COMMON)/aapt2
+$(my_res_package): PRIVATE_SRCJAR := $(my_srcjar)
+$(my_res_package): .KATI_IMPLICIT_OUTPUTS := $(my_srcjar)
 
 ifdef R_file_stamp
 $(my_res_package): PRIVATE_R_FILE_STAMP := $(R_file_stamp)
@@ -108,12 +113,12 @@
 $(my_res_package): $(my_full_asset_paths)
 $(my_res_package): $(my_res_resources_flat) $(my_overlay_resources_flat) \
   $(my_resources_flata) $(my_static_library_resources) \
-  $(AAPT2)
+  $(AAPT2) $(SOONG_ZIP)
 	@echo "AAPT2 link $@"
 	$(call aapt2-link)
 ifdef R_file_stamp
 	@rm -f $(PRIVATE_R_FILE_STAMP)
-	$(call find-generated-R.java,$(PRIVATE_R_FILE_STAMP))
+	$(call find-generated-R.java,$(PRIVATE_JAVA_GEN_DIR),$(PRIVATE_R_FILE_STAMP))
 endif
 ifdef LOCAL_EXPORT_PACKAGE_RESOURCES
 	@rm -f $(PRIVATE_RESOURCE_EXPORT_PACKAGE)
diff --git a/core/aapt_flags.mk b/core/aapt_flags.mk
index 4e3493a..13d4817 100644
--- a/core/aapt_flags.mk
+++ b/core/aapt_flags.mk
@@ -13,8 +13,3 @@
     aapt_flags :=
   endif
 endif
-
-$(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_AAPT_FLAGS := $(LOCAL_AAPT_FLAGS)
-$(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_TARGET_AAPT_CHARACTERISTICS := $(TARGET_AAPT_CHARACTERISTICS)
-$(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_MANIFEST_PACKAGE_NAME := $(LOCAL_MANIFEST_PACKAGE_NAME)
-$(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_MANIFEST_INSTRUMENTATION_FOR := $(LOCAL_MANIFEST_INSTRUMENTATION_FOR)
diff --git a/core/config.mk b/core/config.mk
index 909b8b2..e72b55a 100644
--- a/core/config.mk
+++ b/core/config.mk
@@ -961,19 +961,6 @@
 TARGET_SDK_VERSIONS_WITHOUT_JAVA_18_SUPPORT := $(call numbers_less_than,24,$(TARGET_AVAILABLE_SDK_VERSIONS))
 TARGET_SDK_VERSIONS_WITHOUT_JAVA_19_SUPPORT := $(call numbers_less_than,27,$(TARGET_AVAILABLE_SDK_VERSIONS))
 
-INTERNAL_PLATFORM_API_FILE := $(TARGET_OUT_COMMON_INTERMEDIATES)/PACKAGING/public_api.txt
-INTERNAL_PLATFORM_PRIVATE_API_FILE := $(TARGET_OUT_COMMON_INTERMEDIATES)/PACKAGING/private.txt
-INTERNAL_PLATFORM_PRIVATE_DEX_API_FILE := $(TARGET_OUT_COMMON_INTERMEDIATES)/PACKAGING/private-dex.txt
-INTERNAL_PLATFORM_REMOVED_API_FILE := $(TARGET_OUT_COMMON_INTERMEDIATES)/PACKAGING/removed.txt
-INTERNAL_PLATFORM_SYSTEM_API_FILE := $(TARGET_OUT_COMMON_INTERMEDIATES)/PACKAGING/system-api.txt
-INTERNAL_PLATFORM_SYSTEM_PRIVATE_API_FILE := $(TARGET_OUT_COMMON_INTERMEDIATES)/PACKAGING/system-private.txt
-INTERNAL_PLATFORM_SYSTEM_PRIVATE_DEX_API_FILE := $(TARGET_OUT_COMMON_INTERMEDIATES)/PACKAGING/system-private-dex.txt
-INTERNAL_PLATFORM_SYSTEM_REMOVED_API_FILE := $(TARGET_OUT_COMMON_INTERMEDIATES)/PACKAGING/system-removed.txt
-INTERNAL_PLATFORM_SYSTEM_EXACT_API_FILE := $(TARGET_OUT_COMMON_INTERMEDIATES)/PACKAGING/system-exact.txt
-INTERNAL_PLATFORM_TEST_API_FILE := $(TARGET_OUT_COMMON_INTERMEDIATES)/PACKAGING/test-api.txt
-INTERNAL_PLATFORM_TEST_REMOVED_API_FILE := $(TARGET_OUT_COMMON_INTERMEDIATES)/PACKAGING/test-removed.txt
-INTERNAL_PLATFORM_TEST_EXACT_API_FILE := $(TARGET_OUT_COMMON_INTERMEDIATES)/PACKAGING/test-exact.txt
-
 INTERNAL_PLATFORM_HIDDENAPI_LIGHT_GREYLIST := $(TARGET_OUT_COMMON_INTERMEDIATES)/PACKAGING/hiddenapi-light-greylist.txt
 INTERNAL_PLATFORM_HIDDENAPI_DARK_GREYLIST := $(TARGET_OUT_COMMON_INTERMEDIATES)/PACKAGING/hiddenapi-dark-greylist.txt
 INTERNAL_PLATFORM_HIDDENAPI_BLACKLIST := $(TARGET_OUT_COMMON_INTERMEDIATES)/PACKAGING/hiddenapi-blacklist.txt
diff --git a/core/definitions.mk b/core/definitions.mk
index bd2afac..e259e19 100644
--- a/core/definitions.mk
+++ b/core/definitions.mk
@@ -1036,9 +1036,9 @@
   $(PRIVATE_RS_FLAGS) \
   $(foreach inc,$(PRIVATE_RS_INCLUDES),$(addprefix -I , $(inc))) \
   $(PRIVATE_RS_SOURCE_FILES)
+$(SOONG_ZIP) -o $@ -C $(PRIVATE_RS_OUTPUT_DIR)/src -D $(PRIVATE_RS_OUTPUT_DIR)/src
+$(SOONG_ZIP) -o $(PRIVATE_RS_OUTPUT_RES_ZIP) -C $(PRIVATE_RS_OUTPUT_DIR)/res -D $(PRIVATE_RS_OUTPUT_DIR)/res
 $(call _merge-renderscript-d,$(PRIVATE_DEP_FILES),$@.d)
-$(hide) mkdir -p $(dir $@)
-$(hide) touch $@
 endef
 
 define transform-bc-to-so
@@ -2021,11 +2021,12 @@
 # This rule creates the R.java and Manifest.java files, both of which
 # are PRODUCT-neutral.  Don't pass PRIVATE_PRODUCT_AAPT_CONFIG to this invocation.
 define create-resource-java-files
-@mkdir -p $(PRIVATE_SOURCE_INTERMEDIATES_DIR)
 @mkdir -p $(dir $(PRIVATE_RESOURCE_PUBLICS_OUTPUT))
+rm -rf $(PRIVATE_JAVA_GEN_DIR)
+mkdir -p $(PRIVATE_JAVA_GEN_DIR)
 $(hide) $(AAPT_ASAN_OPTIONS) $(AAPT) package $(PRIVATE_AAPT_FLAGS) -m \
     $(eval # PRIVATE_PRODUCT_AAPT_CONFIG is intentionally missing-- see comment.) \
-    $(addprefix -J , $(PRIVATE_SOURCE_INTERMEDIATES_DIR)) \
+    $(addprefix -J , $(PRIVATE_JAVA_GEN_DIR)) \
     $(addprefix -M , $(PRIVATE_ANDROID_MANIFEST)) \
     $(addprefix -P , $(PRIVATE_RESOURCE_PUBLICS_OUTPUT)) \
     $(addprefix -S , $(PRIVATE_RESOURCE_DIR)) \
@@ -2039,30 +2040,31 @@
     $(addprefix --rename-manifest-package , $(PRIVATE_MANIFEST_PACKAGE_NAME)) \
     $(addprefix --rename-instrumentation-target-package , $(PRIVATE_MANIFEST_INSTRUMENTATION_FOR)) \
     --skip-symbols-without-default-localization
+$(SOONG_ZIP) -o $(PRIVATE_SRCJAR) -C $(PRIVATE_JAVA_GEN_DIR) -D $(PRIVATE_JAVA_GEN_DIR)
 # So that we re-run aapt when the list of input files change
 $(hide) echo $(PRIVATE_RESOURCE_LIST) >/dev/null
 endef
 
-# Search for generated R.java/Manifest.java, copy the found R.java as $1.
+# Search for generated R.java/Manifest.java in $1, copy the found R.java as $2.
 # Also copy them to a central 'R' directory to make it easier to add the files to an IDE.
 define find-generated-R.java
-$(hide) for GENERATED_MANIFEST_FILE in `find $(PRIVATE_SOURCE_INTERMEDIATES_DIR) \
+$(hide) for GENERATED_MANIFEST_FILE in `find $(1) \
   -name Manifest.java 2> /dev/null`; do \
     dir=`awk '/package/{gsub(/\./,"/",$$2);gsub(/;/,"",$$2);print $$2;exit}' $$GENERATED_MANIFEST_FILE`; \
     mkdir -p $(TARGET_COMMON_OUT_ROOT)/R/$$dir; \
     $(ACP) -fp $$GENERATED_MANIFEST_FILE $(TARGET_COMMON_OUT_ROOT)/R/$$dir; \
   done;
-$(hide) for GENERATED_R_FILE in `find $(PRIVATE_SOURCE_INTERMEDIATES_DIR) \
+$(hide) for GENERATED_R_FILE in `find $(1) \
   -name R.java 2> /dev/null`; do \
     dir=`awk '/package/{gsub(/\./,"/",$$2);gsub(/;/,"",$$2);print $$2;exit}' $$GENERATED_R_FILE`; \
     mkdir -p $(TARGET_COMMON_OUT_ROOT)/R/$$dir; \
     $(ACP) -fp $$GENERATED_R_FILE $(TARGET_COMMON_OUT_ROOT)/R/$$dir \
       || exit 31; \
-    $(ACP) -fp $$GENERATED_R_FILE $1 || exit 32; \
+    $(ACP) -fp $$GENERATED_R_FILE $(2) || exit 32; \
   done;
 @# Ensure that the target file is always created, i.e. also in case we did not
 @# enter the GENERATED_R_FILE-loop above. This avoids unnecessary rebuilding.
-$(hide) touch $1
+$(hide) touch $(2)
 endef
 
 ###########################################################
@@ -2082,9 +2084,7 @@
 # TODO(b/74574557): use aapt2 compile --zip if it gets implemented
 define aapt2-compile-resource-zips
 @mkdir -p $(dir $@)
-rm -rf $@.contents
-mkdir -p $@.contents
-$(EXTRACT_SRCJARS) $@.contents $@.list $(PRIVATE_SOURCE_RES_ZIPS)
+$(ZIPSYNC) -d $@.contents -l $@.list $(PRIVATE_SOURCE_RES_ZIPS)
 $(hide) $(AAPT2) compile -o $@ --dir $@.tmp $(PRIVATE_AAPT2_CFLAGS) --legacy
 endef
 
@@ -2112,6 +2112,8 @@
 
 define aapt2-link
 @mkdir -p $(dir $@)
+rm -rf $(PRIVATE_JAVA_GEN_DIR)
+mkdir -p $(PRIVATE_JAVA_GEN_DIR)
 $(call dump-words-to-file,$(PRIVATE_RES_FLAT),$(dir $@)aapt2-flat-list)
 $(call dump-words-to-file,$(PRIVATE_OVERLAY_FLAT),$(dir $@)aapt2-flat-overlay-list)
 $(hide) $(AAPT2) link -o $@ \
@@ -2120,7 +2122,7 @@
   $(addprefix -I ,$(PRIVATE_AAPT_INCLUDES)) \
   $(addprefix -I ,$(PRIVATE_SHARED_ANDROID_LIBRARIES)) \
   $(addprefix -A ,$(PRIVATE_ASSET_DIR)) \
-  $(addprefix --java ,$(PRIVATE_SOURCE_INTERMEDIATES_DIR)) \
+  $(addprefix --java ,$(PRIVATE_JAVA_GEN_DIR)) \
   $(addprefix --proguard ,$(PRIVATE_PROGUARD_OPTIONS_FILE)) \
   $(addprefix --min-sdk-version ,$(PRIVATE_DEFAULT_APP_TARGET_SDK)) \
   $(addprefix --target-sdk-version ,$(PRIVATE_DEFAULT_APP_TARGET_SDK)) \
@@ -2133,6 +2135,7 @@
   $(addprefix --rename-instrumentation-target-package ,$(PRIVATE_MANIFEST_INSTRUMENTATION_FOR)) \
   -R \@$(dir $@)aapt2-flat-overlay-list \
   \@$(dir $@)aapt2-flat-list
+$(SOONG_ZIP) -o $(PRIVATE_SRCJAR) -C $(PRIVATE_JAVA_GEN_DIR) -D $(PRIVATE_JAVA_GEN_DIR)
 endef
 
 ###########################################################
@@ -2214,8 +2217,6 @@
 fi
 $(if $(PRIVATE_HAS_PROTO_SOURCES), \
     $(hide) find $(PRIVATE_PROTO_SOURCE_INTERMEDIATES_DIR) -name '*.java' -and -not -name '.*' >> $(1))
-$(if $(PRIVATE_HAS_RS_SOURCES), \
-    $(hide) find $(PRIVATE_RS_SOURCE_INTERMEDIATES_DIR) -name '*.java' -and -not -name '.*' >> $(1))
 endef
 
 # Some historical notes:
@@ -2237,11 +2238,11 @@
 # $(2): classpath_libs
 define compile-java
 $(hide) rm -f $@
-$(hide) rm -rf $(PRIVATE_CLASS_INTERMEDIATES_DIR) $(PRIVATE_ANNO_INTERMEDIATES_DIR) $(if $(PRIVATE_SRCJARS),$(PRIVATE_SRCJAR_INTERMEDIATES_DIR))
+$(hide) rm -rf $(PRIVATE_CLASS_INTERMEDIATES_DIR) $(PRIVATE_ANNO_INTERMEDIATES_DIR)
 $(hide) mkdir -p $(dir $@)
-$(hide) mkdir -p $(PRIVATE_CLASS_INTERMEDIATES_DIR) $(PRIVATE_ANNO_INTERMEDIATES_DIR) $(if $(PRIVATE_SRCJARS),$(PRIVATE_SRCJAR_INTERMEDIATES_DIR))
+$(hide) mkdir -p $(PRIVATE_CLASS_INTERMEDIATES_DIR) $(PRIVATE_ANNO_INTERMEDIATES_DIR)
 $(if $(PRIVATE_SRCJARS),\
-    $(EXTRACT_SRCJARS) $(PRIVATE_SRCJAR_INTERMEDIATES_DIR) $(PRIVATE_SRCJAR_LIST_FILE) $(PRIVATE_SRCJARS))
+    $(ZIPSYNC) -d $(PRIVATE_SRCJAR_INTERMEDIATES_DIR) -l $(PRIVATE_SRCJAR_LIST_FILE) -f "*.java" $(PRIVATE_SRCJARS))
 $(hide) if [ -s $(PRIVATE_JAVA_SOURCE_LIST) $(if $(PRIVATE_SRCJARS),-o -s $(PRIVATE_SRCJAR_LIST_FILE) )] ; then \
     $(SOONG_JAVAC_WRAPPER) $(JAVAC_WRAPPER) $(1) -encoding UTF-8 \
     $(if $(findstring true,$(PRIVATE_WARNINGS_ENABLE)),$(xlint_unchecked),) \
diff --git a/core/droiddoc.mk b/core/droiddoc.mk
index 8115481..b174f31 100644
--- a/core/droiddoc.mk
+++ b/core/droiddoc.mk
@@ -189,15 +189,15 @@
         $(droiddoc) \
         $(html_dir_files) \
         $(full_java_libs) \
-        $(EXTRACT_SRCJARS) \
+        $(ZIPSYNC) \
         $(LOCAL_SRCJARS) \
         $(LOCAL_ADDITIONAL_DEPENDENCIES)
 	@echo Docs droiddoc: $(PRIVATE_OUT_DIR)
 	$(hide) mkdir -p $(dir $@)
-	$(hide) rm -rf $(PRIVATE_STUB_OUT_DIR) $(PRIVATE_SRCJAR_INTERMEDIATES_DIR)
+	$(hide) rm -rf $(PRIVATE_STUB_OUT_DIR)
 	$(call prepare-doc-source-list,$(PRIVATE_SRC_LIST_FILE),$(PRIVATE_JAVA_FILES), \
 			$(PRIVATE_SOURCE_INTERMEDIATES_DIR) $(PRIVATE_ADDITIONAL_JAVA_DIR))
-	$(EXTRACT_SRCJARS) $(PRIVATE_SRCJAR_INTERMEDIATES_DIR) $(PRIVATE_SRCJAR_LIST_FILE) $(PRIVATE_SRCJARS)
+	$(ZIPSYNC) -d $(PRIVATE_SRCJAR_INTERMEDIATES_DIR) -l $(PRIVATE_SRCJAR_LIST_FILE) -f "*.java" $(PRIVATE_SRCJARS)
 	$(hide) ( \
 		$(JAVADOC) \
                 -encoding UTF-8 \
@@ -243,13 +243,12 @@
 # For OpenJDK 8 we can use -bootclasspath to define the core libraries code.
 $(full_target): PRIVATE_BOOTCLASSPATH_ARG := $(addprefix -bootclasspath ,$(PRIVATE_BOOTCLASSPATH))
 endif
-$(full_target): $(full_src_files) $(LOCAL_GENERATED_SOURCES) $(full_java_libs) $(EXTRACT_SRCJARS) $(LOCAL_SRCJARS) $(LOCAL_ADDITIONAL_DEPENDENCIES)
+$(full_target): $(full_src_files) $(LOCAL_GENERATED_SOURCES) $(full_java_libs) $(ZIPSYNC) $(LOCAL_SRCJARS) $(LOCAL_ADDITIONAL_DEPENDENCIES)
 	@echo Docs javadoc: $(PRIVATE_OUT_DIR)
 	@mkdir -p $(dir $@)
-	rm -rf $(PRIVATE_SRCJAR_INTERMEDIATES_DIR)
 	$(call prepare-doc-source-list,$(PRIVATE_SRC_LIST_FILE),$(PRIVATE_JAVA_FILES), \
 			$(PRIVATE_SOURCE_INTERMEDIATES_DIR) $(PRIVATE_ADDITIONAL_JAVA_DIR))
-	$(EXTRACT_SRCJARS) $(PRIVATE_SRCJAR_INTERMEDIATES_DIR) $(PRIVATE_SRCJAR_LIST_FILE) $(PRIVATE_SRCJARS)
+	$(ZIPSYNC) -d $(PRIVATE_SRCJAR_INTERMEDIATES_DIR) -l $(PRIVATE_SRCJAR_LIST_FILE) -f "*.java" $(PRIVATE_SRCJARS)
 	$(hide) ( \
 		$(JAVADOC) \
                 -encoding UTF-8 \
diff --git a/core/envsetup.mk b/core/envsetup.mk
index 6a7fbd1..12b5869 100644
--- a/core/envsetup.mk
+++ b/core/envsetup.mk
@@ -408,12 +408,13 @@
 HOST_OUT_SDK_ADDON := $(HOST_OUT)/sdk_addon
 HOST_OUT_NATIVE_TESTS := $(HOST_OUT)/nativetest64
 HOST_OUT_COVERAGE := $(HOST_OUT)/coverage
+HOST_OUT_TESTCASES := $(HOST_OUT)/testcases
 
 HOST_CROSS_OUT_EXECUTABLES := $(HOST_CROSS_OUT)/bin
 HOST_CROSS_OUT_SHARED_LIBRARIES := $(HOST_CROSS_OUT)/lib
 HOST_CROSS_OUT_NATIVE_TESTS := $(HOST_CROSS_OUT)/nativetest
 HOST_CROSS_OUT_COVERAGE := $(HOST_CROSS_OUT)/coverage
-HOST_OUT_TESTCASES := $(HOST_OUT)/testcases
+HOST_CROSS_OUT_TESTCASES := $(HOST_CROSS_OUT)/testcases
 
 HOST_OUT_INTERMEDIATES := $(HOST_OUT)/obj
 HOST_OUT_INTERMEDIATE_LIBRARIES := $(HOST_OUT_INTERMEDIATES)/lib
diff --git a/core/host_dalvik_java_library.mk b/core/host_dalvik_java_library.mk
index fc5b75c..1ef0ccb 100644
--- a/core/host_dalvik_java_library.mk
+++ b/core/host_dalvik_java_library.mk
@@ -99,7 +99,7 @@
     $(annotation_processor_deps) \
     $(NORMALIZE_PATH) \
     $(JAR_ARGS) \
-    $(EXTRACT_SRCJARS) \
+    $(ZIPSYNC) \
     | $(SOONG_JAVAC_WRAPPER)
 	$(transform-host-java-to-dalvik-package)
 
diff --git a/core/host_java_library.mk b/core/host_java_library.mk
index 47a8b02..db24542 100644
--- a/core/host_java_library.mk
+++ b/core/host_java_library.mk
@@ -86,7 +86,7 @@
     $(NORMALIZE_PATH) \
     $(ZIPTIME) \
     $(JAR_ARGS) \
-    $(EXTRACT_SRCJARS) \
+    $(ZIPSYNC) \
     | $(SOONG_JAVAC_WRAPPER)
 	$(transform-host-java-to-package)
 	$(remove-timestamps-from-package)
diff --git a/core/java.mk b/core/java.mk
index 907825c..9823c13 100644
--- a/core/java.mk
+++ b/core/java.mk
@@ -106,159 +106,6 @@
 
 LOCAL_INTERMEDIATE_SOURCE_DIR := $(intermediates.COMMON)/src
 
-###############################################################
-## .rs files: RenderScript sources to .java files and .bc files
-###############################################################
-renderscript_sources := $(filter %.rs,$(LOCAL_SRC_FILES))
-# Because names of the java files from RenderScript are unknown until the
-# .rs file(s) are compiled, we have to depend on a timestamp file.
-RenderScript_file_stamp :=
-rs_generated_res_dir :=
-rs_compatibility_jni_libs :=
-ifneq ($(renderscript_sources),)
-renderscript_sources_fullpath := $(addprefix $(LOCAL_PATH)/, $(renderscript_sources))
-RenderScript_file_stamp := $(LOCAL_INTERMEDIATE_SOURCE_DIR)/RenderScript.stamp
-renderscript_intermediate.COMMON := $(intermediates.COMMON)/renderscript
-
-# Defaulting to an empty string uses the latest available platform SDK.
-renderscript_target_api :=
-
-ifneq (,$(LOCAL_RENDERSCRIPT_TARGET_API))
-  renderscript_target_api := $(LOCAL_RENDERSCRIPT_TARGET_API)
-else
-  ifneq (,$(LOCAL_SDK_VERSION))
-    # Set target-api for LOCAL_SDK_VERSIONs other than current.
-    ifneq (,$(filter-out current system_current test_current core_current, $(LOCAL_SDK_VERSION)))
-      renderscript_target_api := $(call get-numeric-sdk-version,$(LOCAL_SDK_VERSION))
-    endif
-  endif  # LOCAL_SDK_VERSION is set
-endif  # LOCAL_RENDERSCRIPT_TARGET_API is set
-
-# For 64-bit, we always have to upgrade to at least 21 for compat build.
-ifneq ($(LOCAL_RENDERSCRIPT_COMPATIBILITY),)
-  ifeq ($(TARGET_IS_64_BIT),true)
-    ifneq ($(filter $(RSCOMPAT_32BIT_ONLY_API_LEVELS),$(renderscript_target_api)),)
-      renderscript_target_api := 21
-    endif
-  endif
-endif
-
-ifeq ($(LOCAL_RENDERSCRIPT_CC),)
-LOCAL_RENDERSCRIPT_CC := $(LLVM_RS_CC)
-endif
-
-# Turn on all warnings and warnings as errors for RS compiles.
-# This can be disabled with LOCAL_RENDERSCRIPT_FLAGS := -Wno-error
-renderscript_flags := -Wall -Werror
-renderscript_flags += $(LOCAL_RENDERSCRIPT_FLAGS)
-
-# prepend the RenderScript system include path
-ifneq ($(filter-out current system_current test_current core_current,$(LOCAL_SDK_VERSION))$(if $(TARGET_BUILD_APPS),$(filter current system_current test_current,$(LOCAL_SDK_VERSION))),)
-# if a numeric LOCAL_SDK_VERSION, or current LOCAL_SDK_VERSION with TARGET_BUILD_APPS
-LOCAL_RENDERSCRIPT_INCLUDES := \
-    $(HISTORICAL_SDK_VERSIONS_ROOT)/renderscript/clang-include \
-    $(HISTORICAL_SDK_VERSIONS_ROOT)/renderscript/include \
-    $(LOCAL_RENDERSCRIPT_INCLUDES)
-else
-LOCAL_RENDERSCRIPT_INCLUDES := \
-    $(TOPDIR)external/clang/lib/Headers \
-    $(TOPDIR)frameworks/rs/script_api/include \
-    $(LOCAL_RENDERSCRIPT_INCLUDES)
-endif
-
-ifneq ($(LOCAL_RENDERSCRIPT_INCLUDES_OVERRIDE),)
-LOCAL_RENDERSCRIPT_INCLUDES := $(LOCAL_RENDERSCRIPT_INCLUDES_OVERRIDE)
-endif
-
-bc_files := $(patsubst %.rs,%.bc, $(notdir $(renderscript_sources)))
-bc_dep_files := $(addprefix $(renderscript_intermediate.COMMON)/,$(patsubst %.bc,%.d,$(bc_files)))
-
-$(RenderScript_file_stamp): PRIVATE_RS_INCLUDES := $(LOCAL_RENDERSCRIPT_INCLUDES)
-$(RenderScript_file_stamp): PRIVATE_RS_CC := $(LOCAL_RENDERSCRIPT_CC)
-$(RenderScript_file_stamp): PRIVATE_RS_FLAGS := $(renderscript_flags)
-$(RenderScript_file_stamp): PRIVATE_RS_SOURCE_FILES := $(renderscript_sources_fullpath)
-# By putting the generated java files into $(LOCAL_INTERMEDIATE_SOURCE_DIR), they will be
-# automatically found by the java compiling function transform-java-to-classes.jar.
-$(RenderScript_file_stamp): PRIVATE_RS_OUTPUT_DIR := $(renderscript_intermediate.COMMON)
-$(RenderScript_file_stamp): PRIVATE_RS_TARGET_API := $(renderscript_target_api)
-$(RenderScript_file_stamp): PRIVATE_DEP_FILES := $(bc_dep_files)
-$(RenderScript_file_stamp): $(renderscript_sources_fullpath) $(LOCAL_RENDERSCRIPT_CC)
-	$(transform-renderscripts-to-java-and-bc)
-
-# include the dependency files (.d/.P) generated by llvm-rs-cc.
-$(call include-depfile,$(RenderScript_file_stamp).P,$(RenderScript_file_stamp))
-
-ifneq ($(LOCAL_RENDERSCRIPT_COMPATIBILITY),)
-
-
-ifeq ($(filter $(RSCOMPAT_32BIT_ONLY_API_LEVELS),$(renderscript_target_api)),)
-ifeq ($(TARGET_IS_64_BIT),true)
-renderscript_intermediate.bc_folder := $(renderscript_intermediate.COMMON)/res/raw/bc64/
-else
-renderscript_intermediate.bc_folder := $(renderscript_intermediate.COMMON)/res/raw/bc32/
-endif
-else
-renderscript_intermediate.bc_folder := $(renderscript_intermediate.COMMON)/res/raw/
-endif
-
-rs_generated_bc := $(addprefix \
-    $(renderscript_intermediate.bc_folder), $(bc_files))
-
-renderscript_intermediate := $(intermediates)/renderscript
-
-# We don't need the .so files in bundled branches
-# Prevent these from showing up on the device
-# One exception is librsjni.so, which is needed for
-# both native path and compat path.
-rs_jni_lib := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/librsjni.so
-LOCAL_JNI_SHARED_LIBRARIES += librsjni
-
-ifneq (,$(TARGET_BUILD_APPS)$(FORCE_BUILD_RS_COMPAT))
-
-rs_compatibility_jni_libs := $(addprefix \
-    $(renderscript_intermediate)/librs., \
-    $(patsubst %.bc,%.so, $(bc_files)))
-
-$(rs_generated_bc) : $(RenderScript_file_stamp)
-
-rs_support_lib := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/libRSSupport.so
-LOCAL_JNI_SHARED_LIBRARIES += libRSSupport
-
-rs_support_io_lib :=
-# check if the target api level support USAGE_IO
-ifeq ($(filter $(RSCOMPAT_NO_USAGEIO_API_LEVELS),$(renderscript_target_api)),)
-rs_support_io_lib := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/libRSSupportIO.so
-LOCAL_JNI_SHARED_LIBRARIES += libRSSupportIO
-endif
-
-my_arch := $(TARGET_$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH)
-ifneq (,$(filter arm64 mips64 x86_64,$(my_arch)))
-  my_min_sdk_version := 21
-else
-  my_min_sdk_version := $(MIN_SUPPORTED_SDK_VERSION)
-endif
-
-$(rs_compatibility_jni_libs): $(RenderScript_file_stamp) $(RS_PREBUILT_CLCORE) \
-    $(rs_support_lib) $(rs_support_io_lib) $(rs_jni_lib) $(rs_compiler_rt)
-$(rs_compatibility_jni_libs): $(BCC_COMPAT)
-$(rs_compatibility_jni_libs): PRIVATE_CXX := $(CXX_WRAPPER) $(TARGET_CXX)
-$(rs_compatibility_jni_libs): PRIVATE_SDK_VERSION := $(my_min_sdk_version)
-$(rs_compatibility_jni_libs): $(renderscript_intermediate)/librs.%.so: \
-    $(renderscript_intermediate.bc_folder)%.bc \
-    $(SOONG_OUT_DIR)/ndk.timestamp
-	$(transform-bc-to-so)
-
-endif
-
-endif
-
-LOCAL_INTERMEDIATE_TARGETS += $(RenderScript_file_stamp)
-# Make sure the generated resource will be added to the apk.
-rs_generated_res_dir := $(renderscript_intermediate.COMMON)/res
-LOCAL_RESOURCE_DIR := $(rs_generated_res_dir) $(LOCAL_RESOURCE_DIR)
-endif
-
-
 ###########################################################
 ## AIDL: Compile .aidl files to .java
 ###########################################################
@@ -334,9 +181,6 @@
 
 include $(BUILD_SYSTEM)/sdk_check.mk
 
-$(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_HAS_RS_SOURCES := $(if $(renderscript_sources),true)
-$(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_RS_SOURCE_INTERMEDIATES_DIR := $(intermediates.COMMON)/renderscript
-
 # Set the profile source so that the odex / profile code included from java.mk
 # can find it.
 #
@@ -403,7 +247,6 @@
 java_sources_deps := \
     $(java_sources) \
     $(java_resource_sources) \
-    $(RenderScript_file_stamp) \
     $(proto_java_sources_file_stamp) \
     $(LOCAL_SRCJARS) \
     $(LOCAL_ADDITIONAL_DEPENDENCIES)
@@ -465,7 +308,7 @@
     $(annotation_processor_deps) \
     $(NORMALIZE_PATH) \
     $(JAR_ARGS) \
-    $(EXTRACT_SRCJARS) \
+    $(ZIPSYNC) \
     | $(SOONG_JAVAC_WRAPPER)
 	@echo "Target Java: $@
 	$(call compile-java,$(TARGET_JAVAC),$(PRIVATE_ALL_JAVA_HEADER_LIBRARIES))
diff --git a/core/java_common.mk b/core/java_common.mk
index dea0435..44ee4b2 100644
--- a/core/java_common.mk
+++ b/core/java_common.mk
@@ -177,7 +177,7 @@
 #####################################
 ## Warn if there is unrecognized file in LOCAL_SRC_FILES.
 my_unknown_src_files := $(filter-out \
-  %.java %.aidl %.proto %.logtags %.rs, \
+  %.java %.aidl %.proto %.logtags, \
   $(LOCAL_SRC_FILES) $(LOCAL_INTERMEDIATE_SOURCES) $(LOCAL_GENERATED_SOURCES))
 ifneq ($(my_unknown_src_files),)
 $(warning $(LOCAL_MODULE_MAKEFILE): $(LOCAL_MODULE): Unused source files: $(my_unknown_src_files))
diff --git a/core/java_renderscript.mk b/core/java_renderscript.mk
new file mode 100644
index 0000000..191b3be
--- /dev/null
+++ b/core/java_renderscript.mk
@@ -0,0 +1,155 @@
+###############################################################
+## Renderscript support for java
+## Adds rules to convert .rs files to .java and .bc files
+###############################################################
+
+renderscript_sources := $(filter %.rs,$(LOCAL_SRC_FILES))
+LOCAL_SRC_FILES := $(filter-out %.rs,$(LOCAL_SRC_FILES))
+
+rs_generated_res_zip :=
+rs_generated_src_jar :=
+rs_compatibility_jni_libs :=
+ifneq ($(renderscript_sources),)
+renderscript_sources_fullpath := $(addprefix $(LOCAL_PATH)/, $(renderscript_sources))
+renderscript_intermediate.COMMON := $(intermediates.COMMON)/renderscript
+rs_generated_res_zip := $(renderscript_intermediate.COMMON)/res.zip
+rs_generated_src_jar := $(renderscript_intermediate.COMMON)/rs.srcjar
+
+LOCAL_SRCJARS += $(rs_generated_src_jar)
+
+# Defaulting to an empty string uses the latest available platform SDK.
+renderscript_target_api :=
+
+ifneq (,$(LOCAL_RENDERSCRIPT_TARGET_API))
+  renderscript_target_api := $(LOCAL_RENDERSCRIPT_TARGET_API)
+else
+  ifneq (,$(LOCAL_SDK_VERSION))
+    # Set target-api for LOCAL_SDK_VERSIONs other than current.
+    ifneq (,$(filter-out current system_current test_current core_current, $(LOCAL_SDK_VERSION)))
+      renderscript_target_api := $(call get-numeric-sdk-version,$(LOCAL_SDK_VERSION))
+    endif
+  endif  # LOCAL_SDK_VERSION is set
+endif  # LOCAL_RENDERSCRIPT_TARGET_API is set
+
+# For 64-bit, we always have to upgrade to at least 21 for compat build.
+ifneq ($(LOCAL_RENDERSCRIPT_COMPATIBILITY),)
+  ifeq ($(TARGET_IS_64_BIT),true)
+    ifneq ($(filter $(RSCOMPAT_32BIT_ONLY_API_LEVELS),$(renderscript_target_api)),)
+      renderscript_target_api := 21
+    endif
+  endif
+endif
+
+ifeq ($(LOCAL_RENDERSCRIPT_CC),)
+LOCAL_RENDERSCRIPT_CC := $(LLVM_RS_CC)
+endif
+
+# Turn on all warnings and warnings as errors for RS compiles.
+# This can be disabled with LOCAL_RENDERSCRIPT_FLAGS := -Wno-error
+renderscript_flags := -Wall -Werror
+renderscript_flags += $(LOCAL_RENDERSCRIPT_FLAGS)
+
+# prepend the RenderScript system include path
+ifneq ($(filter-out current system_current test_current core_current,$(LOCAL_SDK_VERSION))$(if $(TARGET_BUILD_APPS),$(filter current system_current test_current,$(LOCAL_SDK_VERSION))),)
+# if a numeric LOCAL_SDK_VERSION, or current LOCAL_SDK_VERSION with TARGET_BUILD_APPS
+LOCAL_RENDERSCRIPT_INCLUDES := \
+    $(HISTORICAL_SDK_VERSIONS_ROOT)/renderscript/clang-include \
+    $(HISTORICAL_SDK_VERSIONS_ROOT)/renderscript/include \
+    $(LOCAL_RENDERSCRIPT_INCLUDES)
+else
+LOCAL_RENDERSCRIPT_INCLUDES := \
+    $(TOPDIR)external/clang/lib/Headers \
+    $(TOPDIR)frameworks/rs/script_api/include \
+    $(LOCAL_RENDERSCRIPT_INCLUDES)
+endif
+
+ifneq ($(LOCAL_RENDERSCRIPT_INCLUDES_OVERRIDE),)
+LOCAL_RENDERSCRIPT_INCLUDES := $(LOCAL_RENDERSCRIPT_INCLUDES_OVERRIDE)
+endif
+
+bc_files := $(patsubst %.rs,%.bc, $(notdir $(renderscript_sources)))
+bc_dep_files := $(addprefix $(renderscript_intermediate.COMMON)/,$(patsubst %.bc,%.d,$(bc_files)))
+
+$(rs_generated_src_jar): PRIVATE_RS_INCLUDES := $(LOCAL_RENDERSCRIPT_INCLUDES)
+$(rs_generated_src_jar): PRIVATE_RS_CC := $(LOCAL_RENDERSCRIPT_CC)
+$(rs_generated_src_jar): PRIVATE_RS_FLAGS := $(renderscript_flags)
+$(rs_generated_src_jar): PRIVATE_RS_SOURCE_FILES := $(renderscript_sources_fullpath)
+$(rs_generated_src_jar): PRIVATE_RS_OUTPUT_DIR := $(renderscript_intermediate.COMMON)
+$(rs_generated_src_jar): PRIVATE_RS_TARGET_API := $(renderscript_target_api)
+$(rs_generated_src_jar): PRIVATE_DEP_FILES := $(bc_dep_files)
+$(rs_generated_src_jar): PRIVATE_RS_OUTPUT_RES_ZIP := $(rs_generated_res_zip)
+$(rs_generated_src_jar): .KATI_IMPLICIT_OUTPUTS := $(rs_generated_res_zip)
+$(rs_generated_src_jar): $(renderscript_sources_fullpath) $(LOCAL_RENDERSCRIPT_CC) $(SOONG_ZIP)
+	$(transform-renderscripts-to-java-and-bc)
+
+# include the dependency files (.d/.P) generated by llvm-rs-cc.
+$(call include-depfile,$(rs_generated_src_jar).P,$(rs_generated_src_jar))
+
+ifneq ($(LOCAL_RENDERSCRIPT_COMPATIBILITY),)
+
+
+ifeq ($(filter $(RSCOMPAT_32BIT_ONLY_API_LEVELS),$(renderscript_target_api)),)
+ifeq ($(TARGET_IS_64_BIT),true)
+renderscript_intermediate.bc_folder := $(renderscript_intermediate.COMMON)/res/raw/bc64/
+else
+renderscript_intermediate.bc_folder := $(renderscript_intermediate.COMMON)/res/raw/bc32/
+endif
+else
+renderscript_intermediate.bc_folder := $(renderscript_intermediate.COMMON)/res/raw/
+endif
+
+rs_generated_bc := $(addprefix \
+    $(renderscript_intermediate.bc_folder), $(bc_files))
+
+renderscript_intermediate := $(intermediates)/renderscript
+
+# We don't need the .so files in bundled branches
+# Prevent these from showing up on the device
+# One exception is librsjni.so, which is needed for
+# both native path and compat path.
+rs_jni_lib := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/librsjni.so
+LOCAL_JNI_SHARED_LIBRARIES += librsjni
+
+ifneq (,$(TARGET_BUILD_APPS)$(FORCE_BUILD_RS_COMPAT))
+
+rs_compatibility_jni_libs := $(addprefix \
+    $(renderscript_intermediate)/librs., \
+    $(patsubst %.bc,%.so, $(bc_files)))
+
+$(rs_generated_src_jar): .KATI_IMPLICIT_OUTPUTS += $(rs_generated_bc)
+
+rs_support_lib := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/libRSSupport.so
+LOCAL_JNI_SHARED_LIBRARIES += libRSSupport
+
+rs_support_io_lib :=
+# check if the target api level support USAGE_IO
+ifeq ($(filter $(RSCOMPAT_NO_USAGEIO_API_LEVELS),$(renderscript_target_api)),)
+rs_support_io_lib := $(TARGET_OUT_INTERMEDIATE_LIBRARIES)/libRSSupportIO.so
+LOCAL_JNI_SHARED_LIBRARIES += libRSSupportIO
+endif
+
+my_arch := $(TARGET_$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH)
+ifneq (,$(filter arm64 mips64 x86_64,$(my_arch)))
+  my_min_sdk_version := 21
+else
+  my_min_sdk_version := $(MIN_SUPPORTED_SDK_VERSION)
+endif
+
+$(rs_compatibility_jni_libs): $(RS_PREBUILT_CLCORE) \
+    $(rs_support_lib) $(rs_support_io_lib) $(rs_jni_lib) $(rs_compiler_rt)
+$(rs_compatibility_jni_libs): $(BCC_COMPAT)
+$(rs_compatibility_jni_libs): PRIVATE_CXX := $(CXX_WRAPPER) $(TARGET_CXX)
+$(rs_compatibility_jni_libs): PRIVATE_SDK_VERSION := $(my_min_sdk_version)
+$(rs_compatibility_jni_libs): $(renderscript_intermediate)/librs.%.so: \
+    $(renderscript_intermediate.bc_folder)%.bc \
+    $(SOONG_OUT_DIR)/ndk.timestamp
+	$(transform-bc-to-so)
+
+endif
+
+endif
+
+LOCAL_INTERMEDIATE_TARGETS += $(rs_generated_src_jar)
+# Make sure the generated resource will be added to the apk.
+LOCAL_RESOURCE_DIR := $(renderscript_intermediate.COMMON)/res $(LOCAL_RESOURCE_DIR)
+endif
diff --git a/core/package_internal.mk b/core/package_internal.mk
index 858a1bf..fba50a1 100644
--- a/core/package_internal.mk
+++ b/core/package_internal.mk
@@ -322,12 +322,123 @@
 
 include $(BUILD_SYSTEM)/android_manifest.mk
 
+resource_export_package :=
+
+include $(BUILD_SYSTEM)/java_renderscript.mk
+
+include $(BUILD_SYSTEM)/aapt_flags.mk
+
+ifeq ($(need_compile_res),true)
+
+###############################
+## APK splits
+built_apk_splits :=
+installed_apk_splits :=
+my_apk_split_configs :=
+
+ifdef LOCAL_PACKAGE_SPLITS
+ifdef LOCAL_COMPRESSED_MODULE
+$(error $(LOCAL_MODULE): LOCAL_COMPRESSED_MODULE is not currently supported for split installs)
+endif  # LOCAL_COMPRESSED_MODULE
+
+my_apk_split_configs := $(LOCAL_PACKAGE_SPLITS)
+my_split_suffixes := $(subst $(comma),_,$(my_apk_split_configs))
+built_apk_splits := $(foreach s,$(my_split_suffixes),$(intermediates)/package_$(s).apk)
+endif
+
+$(R_file_stamp) $(my_res_package): PRIVATE_AAPT_FLAGS := $(LOCAL_AAPT_FLAGS)
+$(R_file_stamp) $(my_res_package): PRIVATE_TARGET_AAPT_CHARACTERISTICS := $(TARGET_AAPT_CHARACTERISTICS)
+$(R_file_stamp) $(my_res_package): PRIVATE_MANIFEST_PACKAGE_NAME := $(LOCAL_MANIFEST_PACKAGE_NAME)
+$(R_file_stamp) $(my_res_package): PRIVATE_MANIFEST_INSTRUMENTATION_FOR := $(LOCAL_MANIFEST_INSTRUMENTATION_FOR)
+
+###############################
+## AAPT/AAPT2
+
+ifdef LOCAL_USE_AAPT2
+  my_compiled_res_base_dir := $(intermediates.COMMON)/flat-res
+  ifneq (,$(renderscript_target_api))
+    ifneq ($(call math_gt_or_eq,$(renderscript_target_api),21),true)
+      my_generated_res_zips := $(rs_generated_res_zip)
+    endif  # renderscript_target_api < 21
+  endif  # renderscript_target_api is set
+  my_asset_dirs := $(LOCAL_ASSET_DIR)
+  my_full_asset_paths := $(all_assets)
+
+  # Add AAPT2 link specific flags.
+  $(my_res_package): PRIVATE_AAPT_FLAGS := $(LOCAL_AAPT_FLAGS)
+  ifndef LOCAL_AAPT_NAMESPACES
+    $(my_res_package): PRIVATE_AAPT_FLAGS += --no-static-lib-packages
+  endif
+
+  include $(BUILD_SYSTEM)/aapt2.mk
+else  # LOCAL_USE_AAPT2
+
+  my_srcjar := $(intermediates.COMMON)/aapt.srcjar
+  LOCAL_SRCJARS += $(my_srcjar)
+  $(R_file_stamp): PRIVATE_SRCJAR := $(my_srcjar)
+  $(R_file_stamp): PRIVATE_JAVA_GEN_DIR := $(intermediates.COMMON)/aapt
+  $(R_file_stamp): .KATI_IMPLICIT_OUTPUTS := $(my_srcjar)
+  # Since we don't know where the real R.java file is going to end up,
+  # we need to use another file to stand in its place.  We'll just
+  # copy the generated file to src/R.stamp, which means it will
+  # have the same contents and timestamp as the actual file.
+  #
+  # At the same time, this will copy the R.java file to a central
+  # 'R' directory to make it easier to add the files to an IDE.
+  #
+
+  $(R_file_stamp): PRIVATE_RESOURCE_PUBLICS_OUTPUT := \
+			$(intermediates.COMMON)/public_resources.xml
+  $(R_file_stamp): PRIVATE_PROGUARD_OPTIONS_FILE := $(proguard_options_file)
+  $(R_file_stamp): PRIVATE_RESOURCE_LIST := $(all_res_assets)
+  $(R_file_stamp): $(all_res_assets) $(full_android_manifest) $(rs_generated_res_zip) $(AAPT) $(SOONG_ZIP) | $(ACP)
+	@echo "target R.java/Manifest.java: $(PRIVATE_MODULE) ($@)"
+	@rm -rf $@ && mkdir -p $(dir $@)
+	$(create-resource-java-files)
+	$(call find-generated-R.java,$(PRIVATE_JAVA_GEN_DIR),$@)
+
+  $(proguard_options_file): $(R_file_stamp)
+
+  ifdef LOCAL_EXPORT_PACKAGE_RESOURCES
+    # Put this module's resources into a PRODUCT-agnositc package that
+    # other packages can use to build their own PRODUCT-agnostic R.java (etc.)
+    # files.
+    resource_export_package := $(intermediates.COMMON)/package-export.apk
+    $(R_file_stamp): $(resource_export_package)
+
+    # add-assets-to-package looks at PRODUCT_AAPT_CONFIG, but this target
+    # can't know anything about PRODUCT.  Clear it out just for this target.
+    $(resource_export_package): PRIVATE_PRODUCT_AAPT_CONFIG :=
+    $(resource_export_package): PRIVATE_PRODUCT_AAPT_PREF_CONFIG :=
+    $(resource_export_package): PRIVATE_RESOURCE_LIST := $(all_res_assets)
+    $(resource_export_package): $(all_res_assets) $(full_android_manifest) $(RenderScript_file_stamp) $(AAPT)
+	@echo "target Export Resources: $(PRIVATE_MODULE) ($@)"
+	$(create-empty-package)
+	$(add-assets-to-package)
+  endif
+
+endif  # LOCAL_USE_AAPT2
+
+endif  # need_compile_res
+
 called_from_package_internal := true
 #################################
 include $(BUILD_SYSTEM)/java.mk
 #################################
 called_from_package_internal :=
 
+ifeq ($(need_compile_res),true)
+
+# Other modules should depend on the BUILT module if
+# they want to use this module's R.java file.
+$(LOCAL_BUILT_MODULE): $(R_file_stamp)
+
+# The R.java file must exist by the time the java source
+# list is generated
+$(java_source_list_file): $(R_file_stamp)
+
+endif # need_compile_res
+
 LOCAL_SDK_RES_VERSION:=$(strip $(LOCAL_SDK_RES_VERSION))
 ifeq ($(LOCAL_SDK_RES_VERSION),)
   LOCAL_SDK_RES_VERSION:=$(LOCAL_SDK_VERSION)
@@ -364,111 +475,6 @@
 $(full_classes_compiled_jar): $(data_binding_stamp)
 endif  # LOCAL_DATA_BINDING
 
-resource_export_package :=
-
-include $(BUILD_SYSTEM)/aapt_flags.mk
-
-ifeq ($(need_compile_res),true)
-
-###############################
-## APK splits
-built_apk_splits :=
-installed_apk_splits :=
-my_apk_split_configs :=
-
-ifdef LOCAL_PACKAGE_SPLITS
-ifdef LOCAL_COMPRESSED_MODULE
-$(error $(LOCAL_MODULE): LOCAL_COMPRESSED_MODULE is not currently supported for split installs)
-endif  # LOCAL_COMPRESSED_MODULE
-
-my_apk_split_configs := $(LOCAL_PACKAGE_SPLITS)
-my_split_suffixes := $(subst $(comma),_,$(my_apk_split_configs))
-built_apk_splits := $(foreach s,$(my_split_suffixes),$(intermediates)/package_$(s).apk)
-installed_apk_splits := $(foreach s,$(my_split_suffixes),$(my_module_path)/$(LOCAL_MODULE)_$(s).apk)
-endif
-
-ifdef LOCAL_USE_AAPT2
-my_compiled_res_base_dir := $(intermediates.COMMON)/flat-res
-renderscript_target_api :=
-ifneq (,$(LOCAL_RENDERSCRIPT_TARGET_API))
-renderscript_target_api := $(LOCAL_RENDERSCRIPT_TARGET_API)
-else
-ifneq (,$(LOCAL_SDK_VERSION))
-# Set target-api for LOCAL_SDK_VERSIONs other than current.
-ifneq (,$(filter-out current system_current test_current core_current, $(LOCAL_SDK_VERSION)))
-renderscript_target_api := $(call get-numeric-sdk-version,$(LOCAL_SDK_VERSION))
-endif
-endif  # LOCAL_SDK_VERSION is set
-endif  # LOCAL_RENDERSCRIPT_TARGET_API is set
-ifneq (,$(renderscript_target_api))
-ifneq ($(call math_gt_or_eq,$(renderscript_target_api),21),true)
-my_generated_res_dirs := $(rs_generated_res_dir)
-my_generated_res_dirs_deps := $(RenderScript_file_stamp)
-endif  # renderscript_target_api < 21
-endif  # renderscript_target_api is set
-my_asset_dirs := $(LOCAL_ASSET_DIR)
-my_full_asset_paths := $(all_assets)
-
-# Add AAPT2 link specific flags.
-$(my_res_package): PRIVATE_AAPT_FLAGS := $(LOCAL_AAPT_FLAGS)
-ifndef LOCAL_AAPT_NAMESPACES
-  $(my_res_package): PRIVATE_AAPT_FLAGS += --no-static-lib-packages
-endif
-
-include $(BUILD_SYSTEM)/aapt2.mk
-else  # LOCAL_USE_AAPT2
-
-# Since we don't know where the real R.java file is going to end up,
-# we need to use another file to stand in its place.  We'll just
-# copy the generated file to src/R.stamp, which means it will
-# have the same contents and timestamp as the actual file.
-#
-# At the same time, this will copy the R.java file to a central
-# 'R' directory to make it easier to add the files to an IDE.
-#
-
-$(R_file_stamp): PRIVATE_RESOURCE_PUBLICS_OUTPUT := \
-			$(intermediates.COMMON)/public_resources.xml
-$(R_file_stamp): PRIVATE_PROGUARD_OPTIONS_FILE := $(proguard_options_file)
-$(R_file_stamp): PRIVATE_RESOURCE_LIST := $(all_res_assets)
-$(R_file_stamp): $(all_res_assets) $(full_android_manifest) $(RenderScript_file_stamp) $(AAPT) | $(ACP)
-	@echo "target R.java/Manifest.java: $(PRIVATE_MODULE) ($@)"
-	@rm -rf $@ && mkdir -p $(dir $@)
-	$(create-resource-java-files)
-	$(call find-generated-R.java,$@)
-
-$(proguard_options_file): $(R_file_stamp)
-
-ifdef LOCAL_EXPORT_PACKAGE_RESOURCES
-# Put this module's resources into a PRODUCT-agnositc package that
-# other packages can use to build their own PRODUCT-agnostic R.java (etc.)
-# files.
-resource_export_package := $(intermediates.COMMON)/package-export.apk
-$(R_file_stamp): $(resource_export_package)
-
-# add-assets-to-package looks at PRODUCT_AAPT_CONFIG, but this target
-# can't know anything about PRODUCT.  Clear it out just for this target.
-$(resource_export_package): PRIVATE_PRODUCT_AAPT_CONFIG :=
-$(resource_export_package): PRIVATE_PRODUCT_AAPT_PREF_CONFIG :=
-$(resource_export_package): PRIVATE_RESOURCE_LIST := $(all_res_assets)
-$(resource_export_package): $(all_res_assets) $(full_android_manifest) $(RenderScript_file_stamp) $(AAPT)
-	@echo "target Export Resources: $(PRIVATE_MODULE) ($@)"
-	$(create-empty-package)
-	$(add-assets-to-package)
-endif
-
-endif  # LOCAL_USE_AAPT2
-
-# Other modules should depend on the BUILT module if
-# they want to use this module's R.java file.
-$(LOCAL_BUILT_MODULE): $(R_file_stamp)
-
-# The R.java file must exist by the time the java source
-# list is generated
-$(java_source_list_file): $(R_file_stamp)
-
-endif  # need_compile_res
-
 framework_res_package_export :=
 
 ifneq ($(LOCAL_NO_STANDARD_LIBRARIES),true)
@@ -504,6 +510,14 @@
 $(my_res_package) : $(all_library_res_package_export_deps)
 endif
 
+# These four are set above for $(R_stamp_file) and $(my_res_package), but
+# $(LOCAL_BUILT_MODULE) is not set before java.mk, so they have to be set again
+# here.
+$(LOCAL_BUILT_MODULE): PRIVATE_AAPT_FLAGS := $(LOCAL_AAPT_FLAGS)
+$(LOCAL_BUILT_MODULE): PRIVATE_TARGET_AAPT_CHARACTERISTICS := $(TARGET_AAPT_CHARACTERISTICS)
+$(LOCAL_BUILT_MODULE): PRIVATE_MANIFEST_PACKAGE_NAME := $(LOCAL_MANIFEST_PACKAGE_NAME)
+$(LOCAL_BUILT_MODULE): PRIVATE_MANIFEST_INSTRUMENTATION_FOR := $(LOCAL_MANIFEST_INSTRUMENTATION_FOR)
+
 ifneq ($(full_classes_jar),)
 $(LOCAL_BUILT_MODULE): PRIVATE_DEX_FILE := $(built_dex)
 # Use the jarjar processed arhive as the initial package file.
@@ -670,6 +684,7 @@
 	$(sign-package)
 
 # Rules to install the splits
+installed_apk_splits := $(foreach s,$(my_split_suffixes),$(my_module_path)/$(LOCAL_MODULE)_$(s).apk)
 $(installed_apk_splits) : $(my_module_path)/$(LOCAL_MODULE)_%.apk : $(intermediates)/package_%.apk
 	@echo "Install: $@"
 	$(copy-file-to-new-target)
diff --git a/core/soong_java_prebuilt.mk b/core/soong_java_prebuilt.mk
index 36a71e3..63a1e2e 100644
--- a/core/soong_java_prebuilt.mk
+++ b/core/soong_java_prebuilt.mk
@@ -30,6 +30,7 @@
 
 ifdef LOCAL_DROIDDOC_DOC_ZIP
 $(eval $(call copy-one-file,$(LOCAL_DROIDDOC_DOC_ZIP),$(OUT_DOCS)/$(LOCAL_MODULE)-docs.zip))
+$(call dist-for-goals,docs,$(OUT_DOCS)/$(LOCAL_MODULE)-docs.zip)
 endif
 
 ifdef LOCAL_SOONG_JACOCO_REPORT_CLASSES_JAR
diff --git a/core/static_java_library.mk b/core/static_java_library.mk
index 64e16c2..3219bb1 100644
--- a/core/static_java_library.mk
+++ b/core/static_java_library.mk
@@ -92,7 +92,7 @@
 
 all_res_assets := $(all_resources)
 
-include $(BUILD_SYSTEM)/java_library.mk
+include $(BUILD_SYSTEM)/java_renderscript.mk
 
 ifeq (true,$(need_compile_res))
 include $(BUILD_SYSTEM)/android_manifest.mk
@@ -130,10 +130,15 @@
 
 include $(BUILD_SYSTEM)/aapt_flags.mk
 
+$(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_AAPT_FLAGS := $(LOCAL_AAPT_FLAGS)
+$(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_TARGET_AAPT_CHARACTERISTICS := $(TARGET_AAPT_CHARACTERISTICS)
+$(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_MANIFEST_PACKAGE_NAME := $(LOCAL_MANIFEST_PACKAGE_NAME)
+$(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_MANIFEST_INSTRUMENTATION_FOR := $(LOCAL_MANIFEST_INSTRUMENTATION_FOR)
+
 # add --non-constant-id to prevent inlining constants.
 # AAR needs text symbol file R.txt.
 ifdef LOCAL_USE_AAPT2
-$(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_AAPT_FLAGS := $(LOCAL_AAPT_FLAGS) --static-lib
+$(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_AAPT_FLAGS := $(LOCAL_AAPT_FLAGS) --static-lib --output-text-symbols $(intermediates.COMMON)/R.txt
 ifndef LOCAL_AAPT_NAMESPACES
   $(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_AAPT_FLAGS += --no-static-lib-packages
 endif
@@ -141,10 +146,15 @@
 $(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_PRODUCT_AAPT_PREF_CONFIG :=
 $(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_TARGET_AAPT_CHARACTERISTICS :=
 else
-$(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_AAPT_FLAGS := $(LOCAL_AAPT_FLAGS) --non-constant-id --output-text-symbols $(LOCAL_INTERMEDIATE_SOURCE_DIR)
+$(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_AAPT_FLAGS := $(LOCAL_AAPT_FLAGS) --non-constant-id --output-text-symbols $(intermediates.COMMON)
+
+my_srcjar := $(intermediates.COMMON)/aapt.srcjar
+LOCAL_SRCJARS += $(my_srcjar)
+$(R_file_stamp): PRIVATE_SRCJAR := $(my_srcjar)
+$(R_file_stamp): PRIVATE_JAVA_GEN_DIR := $(intermediates.COMMON)/aapt
+$(R_file_stamp): .KATI_IMPLICIT_OUTPUTS := $(intermediates.COMMON)/R.txt) $(my_srcjar)
 endif
 
-$(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_SOURCE_INTERMEDIATES_DIR := $(LOCAL_INTERMEDIATE_SOURCE_DIR)
 $(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_ANDROID_MANIFEST := $(full_android_manifest)
 $(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_RESOURCE_PUBLICS_OUTPUT := $(intermediates.COMMON)/public_resources.xml
 $(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_RESOURCE_DIR := $(LOCAL_RESOURCE_DIR)
@@ -156,35 +166,32 @@
 $(LOCAL_INTERMEDIATE_TARGETS): PRIVATE_MANIFEST_INSTRUMENTATION_FOR :=
 
 ifdef LOCAL_USE_AAPT2
-# One more level with name res so we can zip up the flat resources that can be linked by apps.
-my_compiled_res_base_dir := $(intermediates.COMMON)/flat-res/res
-renderscript_target_api :=
-ifneq (,$(LOCAL_RENDERSCRIPT_TARGET_API))
-renderscript_target_api := $(LOCAL_RENDERSCRIPT_TARGET_API)
+  # One more level with name res so we can zip up the flat resources that can be linked by apps.
+  my_compiled_res_base_dir := $(intermediates.COMMON)/flat-res/res
+  ifneq (,$(renderscript_target_api))
+    ifneq ($(call math_gt_or_eq,$(renderscript_target_api),21),true)
+      my_generated_res_zips := $(rs_generated_res_zip)
+    endif  # renderscript_target_api < 21
+  endif  # renderscript_target_api is set
+  include $(BUILD_SYSTEM)/aapt2.mk
+  $(my_res_package) : $(framework_res_package_export)
+  $(my_res_package): .KATI_IMPLICIT_OUTPUTS += $(intermediates.COMMON)/R.txt
 else
-ifneq (,$(LOCAL_SDK_VERSION))
-# Set target-api for LOCAL_SDK_VERSIONs other than current.
-ifneq (,$(filter-out current system_current test_current core_current, $(LOCAL_SDK_VERSION)))
-renderscript_target_api := $(call get-numeric-sdk-version,$(LOCAL_SDK_VERSION))
-endif
-endif  # LOCAL_SDK_VERSION is set
-endif  # LOCAL_RENDERSCRIPT_TARGET_API is set
-ifneq (,$(renderscript_target_api))
-ifneq ($(call math_gt_or_eq,$(renderscript_target_api),21),true)
-my_generated_res_dirs := $(rs_generated_res_dir)
-my_generated_res_dirs_deps := $(RenderScript_file_stamp)
-endif  # renderscript_target_api < 21
-endif  # renderscript_target_api is set
-include $(BUILD_SYSTEM)/aapt2.mk
-$(my_res_package) : $(framework_res_package_export)
-else
-$(R_file_stamp): PRIVATE_RESOURCE_LIST := $(all_resources)
-$(R_file_stamp) : $(all_resources) $(full_android_manifest) $(AAPT) $(framework_res_package_export)
+  $(R_file_stamp): .KATI_IMPLICIT_OUTPUTS += $(intermediates.COMMON)/R.txt
+  $(R_file_stamp): PRIVATE_RESOURCE_LIST := $(all_resources)
+  $(R_file_stamp) : $(all_resources) $(full_android_manifest) $(AAPT) $(SOONG_ZIP) \
+    $(framework_res_package_export) $(rs_generated_res_zip)
 	@echo "target R.java/Manifest.java: $(PRIVATE_MODULE) ($@)"
 	$(create-resource-java-files)
-	$(hide) find $(PRIVATE_SOURCE_INTERMEDIATES_DIR) -name R.java | xargs cat > $@
+	$(hide) find $(PRIVATE_JAVA_GEN_DIR) -name R.java | xargs cat > $@
 endif  # LOCAL_USE_AAPT2
 
+endif # need_compile_res
+
+include $(BUILD_SYSTEM)/java_library.mk
+
+ifeq (true,$(need_compile_res))
+
 $(LOCAL_BUILT_MODULE): $(R_file_stamp)
 $(java_source_list_file): $(R_file_stamp)
 $(full_classes_compiled_jar): $(R_file_stamp)
@@ -204,9 +211,9 @@
 $(built_aar): PRIVATE_ANDROID_MANIFEST := $(full_android_manifest)
 $(built_aar): PRIVATE_CLASSES_JAR := $(aar_classes_jar)
 $(built_aar): PRIVATE_RESOURCE_DIR := $(LOCAL_RESOURCE_DIR)
-$(built_aar): PRIVATE_R_TXT := $(LOCAL_INTERMEDIATE_SOURCE_DIR)/R.txt
+$(built_aar): PRIVATE_R_TXT := $(intermediates.COMMON)/R.txt
 $(built_aar): $(JAR_ARGS)
-$(built_aar) : $(aar_classes_jar) $(full_android_manifest)
+$(built_aar) : $(aar_classes_jar) $(full_android_manifest) $(intermediates.COMMON)/R.txt
 	@echo "target AAR:  $(PRIVATE_MODULE) ($@)"
 	$(hide) rm -rf $(dir $@)aar && mkdir -p $(dir $@)aar/res
 	$(hide) cp $(PRIVATE_ANDROID_MANIFEST) $(dir $@)aar/AndroidManifest.xml
diff --git a/core/tasks/apicheck.mk b/core/tasks/apicheck.mk
index 3975d20..1d867d1 100644
--- a/core/tasks/apicheck.mk
+++ b/core/tasks/apicheck.mk
@@ -54,7 +54,7 @@
     -error 16 -error 17 -error 18 , \
     cat $(BUILD_SYSTEM)/apicheck_msg_last.txt, \
     check-public-api, \
-    $(call doc-timestamp-for,api-stubs) \
+    $(OUT_DOCS)/api-stubs-docs-stubs.srcjar \
     ))
 
 # Check that the API we're building hasn't changed from the not-yet-released
@@ -71,7 +71,7 @@
     -error 25 -error 26 -error 27, \
     cat $(BUILD_SYSTEM)/apicheck_msg_current.txt, \
     check-public-api, \
-    $(call doc-timestamp-for,api-stubs) \
+    $(OUT_DOCS)/api-stubs-docs-stubs.srcjar \
     ))
 
 .PHONY: update-public-api
@@ -100,7 +100,7 @@
     -error 16 -error 17 -error 18 , \
     cat $(BUILD_SYSTEM)/apicheck_msg_last.txt, \
     check-system-api, \
-    $(call doc-timestamp-for,system-api-stubs) \
+    $(OUT_DOCS)/system-api-stubs-docs-stubs.srcjar \
     ))
 
 # Check that the System API we're building hasn't changed from the not-yet-released
@@ -117,7 +117,7 @@
     -error 25 -error 26 -error 27, \
     cat $(BUILD_SYSTEM)/apicheck_msg_current.txt, \
     check-system-api, \
-    $(call doc-timestamp-for,system-api-stubs) \
+    $(OUT_DOCS)/system-api-stubs-docs-stubs.srcjar \
     ))
 
 .PHONY: update-system-api
@@ -149,7 +149,7 @@
     -error 25 -error 26 -error 27, \
     cat $(BUILD_SYSTEM)/apicheck_msg_current.txt, \
     check-test-api, \
-    $(call doc-timestamp-for,test-api-stubs) \
+    $(OUT_DOCS)/test-api-stubs-docs-stubs.srcjar \
     ))
 
 .PHONY: update-test-api
diff --git a/core/tasks/tools/compatibility.mk b/core/tasks/tools/compatibility.mk
index 0fc2045..6117414 100644
--- a/core/tasks/tools/compatibility.mk
+++ b/core/tasks/tools/compatibility.mk
@@ -28,6 +28,7 @@
 test_artifacts := $(COMPATIBILITY.$(test_suite_name).FILES)
 test_tools := $(HOST_OUT_JAVA_LIBRARIES)/hosttestlib.jar \
   $(HOST_OUT_JAVA_LIBRARIES)/tradefed.jar \
+  $(HOST_OUT_JAVA_LIBRARIES)/loganalysis.jar \
   $(HOST_OUT_JAVA_LIBRARIES)/compatibility-host-util.jar \
   $(HOST_OUT_JAVA_LIBRARIES)/compatibility-host-util-tests.jar \
   $(HOST_OUT_JAVA_LIBRARIES)/compatibility-common-util-tests.jar \
diff --git a/tools/releasetools/common.py b/tools/releasetools/common.py
index 743c6a0..787de98 100644
--- a/tools/releasetools/common.py
+++ b/tools/releasetools/common.py
@@ -1828,35 +1828,47 @@
 
 def MakeRecoveryPatch(input_dir, output_sink, recovery_img, boot_img,
                       info_dict=None):
-  """Generate a binary patch that creates the recovery image starting
-  with the boot image.  (Most of the space in these images is just the
-  kernel, which is identical for the two, so the resulting patch
-  should be efficient.)  Add it to the output zip, along with a shell
-  script that is run from init.rc on first boot to actually do the
-  patching and install the new recovery image.
+  """Generates the recovery-from-boot patch and writes the script to output.
 
-  recovery_img and boot_img should be File objects for the
-  corresponding images.  info should be the dictionary returned by
-  common.LoadInfoDict() on the input target_files.
+  Most of the space in the boot and recovery images is just the kernel, which is
+  identical for the two, so the resulting patch should be efficient. Add it to
+  the output zip, along with a shell script that is run from init.rc on first
+  boot to actually do the patching and install the new recovery image.
+
+  Args:
+    input_dir: The top-level input directory of the target-files.zip.
+    output_sink: The callback function that writes the result.
+    recovery_img: File object for the recovery image.
+    boot_img: File objects for the boot image.
+    info_dict: A dict returned by common.LoadInfoDict() on the input
+        target_files. Will use OPTIONS.info_dict if None has been given.
   """
-
   if info_dict is None:
     info_dict = OPTIONS.info_dict
 
-  full_recovery_image = info_dict.get("full_recovery_image", None) == "true"
+  full_recovery_image = info_dict.get("full_recovery_image") == "true"
 
   if full_recovery_image:
     output_sink("etc/recovery.img", recovery_img.data)
 
   else:
-    diff_program = ["imgdiff"]
+    system_root_image = info_dict.get("system_root_image") == "true"
     path = os.path.join(input_dir, "SYSTEM", "etc", "recovery-resource.dat")
-    if os.path.exists(path):
-      diff_program.append("-b")
-      diff_program.append(path)
-      bonus_args = "-b /system/etc/recovery-resource.dat"
-    else:
+    # With system-root-image, boot and recovery images will have mismatching
+    # entries (only recovery has the ramdisk entry) (Bug: 72731506). Use bsdiff
+    # to handle such a case.
+    if system_root_image:
+      diff_program = ["bsdiff"]
       bonus_args = ""
+      assert not os.path.exists(path)
+    else:
+      diff_program = ["imgdiff"]
+      if os.path.exists(path):
+        diff_program.append("-b")
+        diff_program.append(path)
+        bonus_args = "-b /system/etc/recovery-resource.dat"
+      else:
+        bonus_args = ""
 
     d = Difference(recovery_img, boot_img, diff_program=diff_program)
     _, _, patch = d.ComputePatch()